"If I go up to a 200 yard zero, will I have issues with <100yd shots?"

Nope... MPBR 3" sighting for, say, 180gr in .30-06 is going to be something like 270yds (going by memory). That means that if you shoot horizontal, the bullet will never go above 3" above line of sight and will drop to 3" below line of sight at 270yds with zero out at something like 225yds...which is sufficient for whitetails. So... out to about 270yds, aim for center of boiler room, pull trigger, fetch deer carcass... don't have to worry about hold over or anything.